Abstract: C₉ petroleum resins was obtained by two-step synthesis from C₉ fraction, which is the side product from enthylene production in the boiling range of 140～196 ℃. The processes of free radical polymerization and catalytic polymerization by Lewis acid were well investigated, and the effect of polymerization method, reaction time and reaction temperature on product quality was discussed. The results show that C₉ petroleum resins can be obtained with light color and higher yield under the following conditions: the mass fraction of initiator 0.01%, the mass fraction of catalyst 1.50%, reaction time 4.5 h, free radical polymerization time 1.5 h, catalytic polymerization time 3.0 h and reaction temperature 55 ℃.

Key words: C₉ fraction ,  Petroleum resin  ,  Free radical polymerization  , Catalytic polymerization  ,  Two-step polymerization

摘要： 探讨了以沸程为140~196℃的生产乙烯的副产物-C₉ 馏分为原料,通过两段聚合法即自由基聚合
法和以Lewis酸为催化剂的催化聚合法合成C₉ 石油树脂的工艺条件。考察了聚合方法、反应时间、反应温度对产品
的影响。结果表明:采用自由基聚合和阳离子催化聚合的两段聚合法,在引发剂的质量分数0.01%、催化剂的质量
分数1.50%、反应时间4.5h(自由基聚合1.5h、催化聚合3.0h)、反应温度55℃的条件下,产品收率比采用单一的自
由基引发聚合的方法及阳离子催化聚合的方法高很多,且色泽浅。

关键词: C₉ 馏分 , 石油树脂 ,  , 自由基聚合, 催化聚合 , 两段聚合